A modified technique for aortic prosthesis implantation after prosthetic valve endocarditis complicated by complex paraannular aortic abscess.

Abstract

The aim of this study is to describe a modified technique for aortic prosthesis implantation in the sinuses of Valsalva without the use of a patch for aortic annular reconstruction in patients with prosthetic valve endocarditis complicated by aortic abscess. From January 2008 to March 2021, 47 patients underwent aortic valve replacement due to prosthetic aortic valve endocarditis. The new aortic prosthesis was implanted into the sinuses of Valsalva above the abscess left open to drain. The first step consists in passing U-shaped stitches with pledgets through the aortic wall approximately 5-7 mm above the abscess involving the annulus. In the second step, the prosthesis is fixed to the aortic wall. In the third step, a 10 mm wide Teflon strip is positioned along the external course of the aortic wall and U-shaped stitches without pledgets are passed from the outside to the inside to definitively fix the prosthetic annulus to the sinuses of Valsalva. In-hospital mortality was 8.5% (4/47 patients). Mean follow-up was 62 ± 37.7 months. Four patients died (9.3%). Predicted probability of cardiac vs non-cardiac mortality was not statistically significant (p = 0.88). Overall survival probability (freedom from all-cause death) at 3, 7 and 9 years was 97%, 87.5% and 75%, respectively. No patients presented with grade 2 or 3 peri-prosthetic leak, nor had endocarditis. Prosthetic valve endocarditis complicated by complex paraannular aortic abscess can be successfully addressed with good long-term results by using our alternative technique.